292 



SPIROSTEMMA. 



Length 13, diam. 2.3 mm.; whorls 10%. 



Jamaica: Ipswich, in the interior of St. Elisabeth parish 

 (Henderson and Simpson). 



A larger species than 8. similis, with the basal keel much 

 stronger. In 8. ipswichensis the length is between 5 and 6 

 times the diameter. 



8. S. RUBRA (C. B. Adams). 



Shell red, cylindrical, similar to the preceding [C. cumingii 

 =Brachypodella elongata] but more finely striate, widely 

 truncate; whorls remaining 12, not very convex; aperture 

 subovate, expanding in a rather thin lip; last whorl acutely 

 carinate. Length .82, width .15 inch [20.5x3.75 mm.]. It 

 is perhaps a variety of C. dunkeri Pfr., but differs in having 

 the greatest diameter at or above the middle of the shell, 

 while in the latter it is at the lower third, above which the 

 shell tapers regularly. C. rubra is larger, has coarser striae, 

 and is always deep red (C.B.Ad.). Jamaica. 



Cyl. cylindrus C.B.A., Synops. Conch. Jam., Proc. Bost. 

 Soc. N. H. 1845, p. 14 (preoc.) = C. rubra C. B. A., Contrib. 

 no. 2, p. 23 (Oct., 1849). 



The original account is given above. I have not identi- 

 fied the species. 



9. S. COGNATA (Vendryes). PI. 34a, figs. 3, 4. 



"Shell rimate, cylindrical, elongated, color very light pale 

 brown ; spire tapering from the last whorl to the summit ; apex 

 truncate, with the loss of 7 to 8 whorls, whorls remaining 11 

 to 12, subplanulate, slightly shouldered, the last detached and 

 descending, strongly carinated at the base, carina continued 

 to the back of the aperture; strige very strong and compact, 

 irregularly spaced and waved here and there, some crossing 

 over the sutures from one whorl to the other; aperture as in 

 inusitata, but less elliptical, well produced beyond the penult 

 whorl. Height, 15 mm. ; greatest breadth, 3 mm. ; aperture, 

 21/2 mm. high, 214 mm. wide." (Vendryes). 



Jamaica: Government cinchona plantations, in the moun- 

 tains of St. Andrew, about 3,500 ft. above sea level (Mr. Hart) . 



Cylindrella (Anoma) cognata VEND., Nautilus xv, p. 1, 

 pi. 1, f. 3, 4 (May 1, 1901). 



